Tallent palmetto bridge constructors, charleston, south carolina donovan l. The csl method is based on measuring the speed of ultrasonic waves. Crosshole sonic logging testing of drilled shafts effective. Piletest piletest technical notes dec2016 background in crosshole sonic logging csl, the received signal amplitude spans several orders of magnitude. We have applied the frequencydomain waveform tomography method to a real crosshole seismic data set acquired from two parallel boreholes 300 m apart. It may be used for crosshole sonic logging csl of drilled shafts or single hole sonic logging. Assessing drilled shaft integrity with crosshole sonic logging. Crossholeanalyzerchamp ssl for crosshole and single hole.
The csl test relies on propagation of ultrasonic waves between. Even when defects are indeed encountered, they may. Drilled shafts water filled tubes olson engineering. If retrieving files from the web, download the necessary zip file. This work shall be measured as the number of drilled shafts on which crosshole sonic logging csl testing is performed and found to be void free in accordance with the special provision. The csl method is based on measuring the speed of ultrasonic. Evaluation of thermal integrity profiling and crosshole. Crosshole sonic logging csl is a method to verify the structural integrity of drilled shafts and other concrete piles the csl method is considered to be more accurate than sonic echo testing in the determination of structural soundness of concrete within the drilled shaft inside of the rebar cage. To download an individual file to your hard drive click the link with the right mouse button, then choose save target as. Jun 28, 2019 this standard is issued under the fixed designation d. In travel time inversion of crosshole seismic tomography, when dealing with real data, the following three issues need to be addressed. Cross hole sonic logging csl has over recent years become the standard method for evaluating the integrity of bridge drilled shafts. Crosshole sonic logging is part of wikiproject geology, an attempt at creating a standardized, informative, comprehensive and easytouse geology resource.
Pdf the crosshole sonic logging csl measurement system to. This test can assess to the integrity of the concrete mainly in the area bounded by the access ducts. Drilled shaft concrete temperatures are theoretically sensitive to defects anywhere within the shaft, which presents an opportunity for improving detection over the widely used crosshole sonic logging csl method. Olson engineering is a pioneer in the instrumentation and use of csl tests for checking the. This method provides little indication of concrete soundness outside the cage. Experiences with crosshole sonic logging and concrete coring for verification of drilled shaft integrity, adsc geo. Pdf crosshole sonic logging csl has over recent years become the standard method for evaluating the integrity of bridge drilled shafts. Crosshole sonic logging geoview gpr boston geoview. Jul 26, 2019 this standard is issued under the fixed designation d. Crosshole sonic logging free download as powerpoint presentation.
The tabletlike champxv continues the tradition of light but rugged crosshole analyzers. Easytoinstall sonic tube system for csl sonitec is a tube solution invented to facilitate the integrity testing of foundations using the csl testing method. Astmd6760 standard test method for integrity testing of concrete deep foundations by ultrasonic crosshole testing barrette. Crosshole sonic logging and frequency tomography analysis of drilled shaft foundations to better evaluate anomalies locations.
May 11, 2019 this standard is issued under the fixed designation d. To view the file, click the link with the left mouse button. The crosshole analyzer determines the quality and consistency of the concrete of drilled shafts, slurry walls, bored piles, castinsitu piles and other types of concrete foundations. These tubes are usually attached to the reinforcement cage along the full length of the shafts. Comparing crosshole sonic logging and lowstrain integrity testing results white, b. The crosshole analyzer champ determines the quality and consistency of the concrete of drilled shafts, slurry walls, bored piles, castinsitu piles and other types of concrete foundations. Crosshole sonic logging csl has over recent years become the standard method for evaluating the integrity of bridge drilled shafts. Rodriaan spruit, a frits van tol, a wout broere, a evert slob, a ernst niederleithinger b. A transmitting and a receiving ultrasonic probes 40 80 khz are lowered into parallel access tubes, which have to be fixed to the reinforcement cage before casting the concrete figure 4. The measurement is primarily based upon the physical phenomenon that the density and stiffness of the medium determine the velocity of an acoustic wave in a medium. Detection of anomalies in diaphragm walls with crosshole. Cross holeanalyzerchamp for crosshole and single hole sonic logging champspecifications physical size. Crosshole sonic logging integrity testing for the new cooper river bridge edward l. Jan, 2019 this standard is issued under the fixed designation d.
The use of crosshole tomography to evaluate drilled shaft repairs les r. D6760 14 standard test method for integrity testing of concrete deep foundations by ultrasonic crosshole testing, barrette, bored pile, crosshole sonic logging, crosshole testing, drilled shaft, integrity test, single hole ultrasonic testing, ultrasonic logging, ultrasonic testing. It may be used for crosshole sonic logging csl of drilled shafts or single hole sonic logging ssl of smaller augered castinplace piles. Astm d6760 14 standard test method for integrity testing. Start this article has been rated as startclass on the projects quality scale.
Still small enough to be portable, the champxv features a larger color. This work shall be according to illinois modified astm d6760. The csl test involves lowering ultrasonic probes through access tubes along the length of the foundation element and as the probes are pulled to the. The chum cross hole ultra sonic monitor uses the crosshole sonic logging csl method to perform highresolution quality control of deep foundations the system uses an ultra sonic wave sent from a transmitter to a receiver pulled through water filled access tubes embedded in the concrete. This work also includes analysis of the csl data, preparation of reports summarizing the csl data, and investigating anomalies identified in the csl data. Aug 29, 2019 this standard is issued under the fixed designation d. Crosshole sonic logging crosshole sonic logging is an established quality assurance method for drilled shafts. The logging unit is a rugged notebook that handles all the incoming data. A variation on csl testing is crosshole tomography ct, which represents the. Overpressure an increase in pore pressures is shown on the sonic log by a drop in sonic velocity or an increase in sonic travel time break in the compaction trend with depth to higher transit times with no change in lithology indicates the top of an overpressured zone. Astm d6760 16 standard test method for integrity testing.
To evaluate the potential of crosspile sonic logging, a real scale test model with built in flaws on two. Sample specification for crosshole sonic logging csl. Crosshole sonic logging csl is widely used for integrity testing of large diameter bored piles likins et al. Crosshole sonic logging csl is the most accurate and reliable technique for assessing the integrity of deep foundation elements constructed onsite from concrete or grout. This standard is issued under the fixed designation d. Jun 21, 2019 this standard is issued under the fixed designation d.
With over 30 years of experience ftc is dedicated to providing its clients with high quality, practical solutions for their foundation testing project needs. Crosshole sonic ultrasonic logging csl system for pile and deep foundation testing using astm d complete control from panasonic rugged tablet with dedicated android application. The csl data is being acquired with an olson sonic crosshole logging system in accordance with relevant astmd676008 standards. Guide bridge special provisions illinois department of.
Crosshole sonic logging is the most accurate and reliable technique for assessing the integrity of. Crosshole sonic logging csl papworths construction testing. Astmd6760 standard test method for integrity testing of. Pdf of the importance of automatic gain control in crosshole.
Defects present in a pile may not be encountered during a crosshole sonic logging csl test. The crosshole sonic logging measurement to measure the quality of bored piles is presented in this paper. The crosshole sonic logging system consists of a rugged notebook used as logging unit, an electronic winch unit and two ultra sonic transducers. By sending ultrasonic pulses through concrete from one probe to another probes located in parallel tubes, the csl procedure inspects the drilled shaft structural integrity of the concrete between the tubes, and extent and location of defects, if any.
Crosshole sonic logging csl is a test used to establish concrete integrity. The testing is being conducted over an estimated period of 16 months. After successful waveform tomography with consideration of above three critical issues, we have also brought in the sonic log information as a geological constraint in the inversion. Crosshole sonicultrasonic logging csl system for pile and deep foundation testing using astm d complete control from panasonic rugged tablet with dedicated android application. Reliability evaluation of crosshole sonic logging for bored pile. Loadtest crosshole sonic logging, by the foundation testing specialists crosshole sonic logging csl is a test used to interior defect evaluations. A new perimeter control blast design concept for underground metalnonmetal drifting applications stephen r. Pdf crosshole sonic logging and frequency tomography analysis. Jun, 2019 this standard is issued under the fixed designation d. Crosshole sonic logging how is crosshole sonic logging.
Detection of anomalies in diaphragm walls with crosshole sonic logging. The crosshole sonic logging csl system is designed for quality assurance qa testing of newly placed critical drilled. Feb 23, 2012 the crosshole analyzer champ determines the quality and consistency of the concrete of drilled shafts, slurry walls, bored piles, castinsitu piles and other types of concrete foundations. This simple system makes it very easy to transport and setup even in locations with limited access. Pdf the crosshole sonic logging csl measurement system. Crosshole sonic logging how is crosshole sonic logging abbreviated. Download all guide bridge special provisions word documents. Crosshole sonic logging and lowstrain impact echo integrity testing were both speci. A new perimeter control blast design concept for underground metalnonmetal.
The cross hole analyzer determines the quality and consistency of the concrete of drilled shafts, slurry walls, bored piles, castinsitu piles and other types of concrete foundations. Crosshole sonic logging csl interior defect evaluations defect defect source receiver cable crosshole diagram illustrating the technique test in progress. Crosshole sonic logging of secant pile walls a feasibilty study conference paper pdf available january 2010 with 3,054 reads how we measure reads. Easytoinstall sonic tube system for csl dextra group. Crosshole sonic logging integrity testing for the new cooper. Crosshole sonic logging of driven piles with rock sockets.
Pdf crosshole sonic logging and frequency tomography. If you would like to participate, you can choose to edit this article, or visit the project page for more information. Through additional information and resources, it is the goal of the project team to supplement the existing cases in dshaft with more drilled shaft data to provide a platform to. The use of crosshole tomography to evaluate drilled shaft. This paper describes investigations conducted to compare detectability from tip and csl measurements for various types of defects. Csl cross sonic logging method allows to determine the structural integrity and homogeneity of concrete within diaphragm walls, bored piles, drilled shafts, barrettes, concrete piles or. Crosshole sonic logging test for piles free download as pdf file. Crosshole sonic logging csl singlehole sonic logging ssl crosshole tomography logging data ct olson engineering is a pioneer in the instrumentation and use of csl testsfor checking the integrity of newly placed drilled shafts, seal footings, and slurry or diaphragm walls.
Sy8 cross hole sonic logging analyzer software can display the threedimensional tubular slice diagram, that is, the variation of the speed value of the external profile of the pile tested is displayed by using the chromatogram, and then the chromatogram is crimped and connected to form the tubular slice diagram to show the variation trend of the speed value of the pile. Crosshole sonic logging csl the csl test relies on propagation of ultrasonic waves. Dshaft was developed in microsoft access and is currently comprised of 25 separate load tests including osterberg, statnamic, and crosshole sonic log testing reports. Us9074473b2 hollow rebar for crosshole sonic logging. Geoview was chosen to test the integrity of the bridges concrete foundations using crosshole sonic logging csl. Pdf crosshole sonic logging of secant pile walls a. The development of crosshole measurement system on physical bored pile modeling was. Crosshole sonic logging test for piles waves mechanics scribd. By sending ultrasonic pulses through concrete from one probe to another probes located in parallel tubes. Aug 25, 2016 flab cross hole sonic logging test 1 flab for soil testing. Comparing crosshole sonic logging and lowstrain integrity. Drilled shafts are prepared for i ntegrity testing by csl during their construction by installation of at least three tubes with a minimum inside diameter of 38mm 1.
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